65157273 has 12 divisors (see below), whose sum is σ = 94229460. Its totient is φ = 43385856.

The previous prime is 65157271. The next prime is 65157283. The reversal of 65157273 is 37275156.

65157273 is a `hidden beast` number, since 6 + 515 + 72 + 73 = 666.

65157273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31945104 + 33212169 = 5652^2 + 5763^2 .

It is not a de Polignac number, because 65157273 - 2¹ = 65157271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65157271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4465 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (7852455).

Almost surely, 2^65157273 is an apocalyptic number.

It is an amenable number.

65157273 is a deficient number, since it is larger than the sum of its proper divisors (29072187).

65157273 is a wasteful number, since it uses less digits than its factorization.

65157273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728 (or 8725 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 65157273 is about 8072.0055128822. The cubic root of 65157273 is about 402.3965975396.

The spelling of 65157273 in words is "sixty-five million, one hundred fifty-seven thousand, two hundred seventy-three".